The Tidal Currents module of
ScanNav allows you to overlay the currents to your charts, in real
time, or at any selected day and time.
You can plan your navigation according to these, either manually, or in
conjunction with the new Routing module, available from version 17 of
ScanNav (release planned for the Paris 2016 show). It also provides
access to the Currents Grib file download service based on data issued from Mercator / MyOcean.
The currents are dependent on the SnTides water height module based on
the Shomar calculation engine of the SHOM. SnTides is included in the
base module. Since Shomar's forecasts are limited to two years, it is
alternatively possible to use the external program WXTides for water
height.The currents source data are issued either from the SHOM UJA data, the UKHO data, or GRIB files download service

The
tidal Currents module of ScanNav is sold as an extension comprising the
following elements:

- License extension:
60 Euros (VAT included) letting you overlay tidal currents to the
map according to your parameters choices. Currents data is originated
from the SHOM (reproduction authorization n° 30/2005), and heights
of tides is calculated by the third party software WXTide

- One or more
of the available Currents Zones: 40 Euros (VAT included) (see list
below)

Click
on the zones numbers for details of each area

Each tidal currents zone corresponds to a SHOM paper Atlas. Click on
the zone number on the chart or in the list below for details of individual
zones.

ScanNav hosts a GRIB download service with Currents data issued
from Mercator - MyOcean. These data are transformed into Grib by the
ScanNav server, and updated twice a day.
The Grib files can be downloaded directly using an http protocol, or by
email requests. They are compressed so as to limit download times.
This service is free of charge, but you must first register . Click here to access the registration form.

You also have access to Currents Grib files for model RTOFS from the Noaa which is more suitable for offshore navigation than for coastal navigation. These are Oceanic currents that cover the North Atlantic at 1/20 °, giving forecasts up to 6 days in one hour steps. These grib files can be downloaded with the Currents or Grib modules

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